I was contacted by a friend, Billy Goode, who farms and runs a kiln-dried log business not far from the top of Sutton Bank.
He sent me a link to a July 1905 Guardian newspaper column called ‘A Country Lover’s Diary’ which had struck a chord with him. Entitled ‘The Trouble with Thrips’ the piece describes what an utter nuisance these insects can be, especially to farmers.
He’d sent it not only because it might be of interest, but also because they were making his working day a misery. He explained: “It’s every year as soon as the temperature is above 24 degrees. We call them harvest bugs or thunder bugs – it’s markedly worse than it was five years ago.” Not only are they a pest for farmers, but they also land on our skin and clothes, and can be very irritating, as described in the 1905 Guardian article below:
‘Thrips are a plague to the farmer and a cause of much annoyance to everyone else; they are so very tiny, measuring only about one-twelfth of an inch, that it seems absurd to think that they can damage wheat. Unfortunately it is their small size that makes them so difficult to deal with, and the tiny larvae suck the juices from the growing grain and cause it to shrivel up. Those of us who are not farmers are not much troubled by the male thrip, for it is wingless, but the flying female bumps up against our faces, settles and walks about, unless it is unfortunate enough to fly right into our eyes, when it dies a watery death, much to our discomfort.’
I know exactly the tiny black bug in question. They are very thin, longer than they are wide, and look a little like a splinter on the skin. I also know how much it tickles when, on a close summer’s day, they land on your skin and wriggle about. Imagine dozens of the things plaguing you while you’re trying to work!
There are at least 150 species in the UK, with males and females both winged and wingless (some of which hitched rides on cargo ships to land on our shores after 1905), and most are named after the particular plant they are most commonly found upon, such as the pea, onion, gladiolus, privet and honeysuckle, as well as the western flower thrip and the glasshouse thrip. We ordinary folk would probably not be able to tell the difference between them, but we will have seen the evidence, such as pea pods with a grey/brown blight on the outside, flower petals with white squiggly lines on them where the pigment has disappeared, leaves with a whitish bloom on them, or malformed buds and foliage, all signs of thrip activity. This is caused by the way the little blighters feed – by puncturing the outside layer of the plant and sucking out the juicy insides.
Another sign of thrips are tiny black speckles on leaves, which is evidence they have used that particular bit of plant as a toilet.
Although plants can recover, the damage can affect crop yields and if you are a commercial farmer, your customers will not be happy with disfigured produce. For example people are unlikely to buy your peas if the pods are covered in blight, even if the peas inside are perfectly fine. You will not be able to sell flowers if the petals have marks or the leaves black speckles all over them.
Thrip activity can introduce viruses that cause far greater problems, particularly for cereal and vegetables crops. The virus is transmitted into the plant because of the thrips breaching the outer protective layer leaving an open channel for it to enter, in the same way we humans can contract an infection through an open wound.
Thrips are difficult to stop because they breed for most of the year, each producing one to two eggs per day over their 45-day life cycle. They go from egg to full grown adult in around two weeks.
Obviously there are chemical solutions, but a more planet-friendly method is to encourage natural predators, such as lacewings, ladybirds and thrip-loving mites that disrupt the breeding cycle.
Do you know a tried and tested method of thrip control you can pass on to poor Billy?
Do you have opinions, memories or ideas to share with me? Get in touch with me using the ‘Contact’ button on the top right.
This column appeared in the Darlington & Stockton Times on Friday 15th Aug and the Ryedale Gazette and Herald on Wednesday 13th 2025
The Countryman's Daughter 